Hydrostatic body fat testing, or underwater weighing, is the immersion of the body in water to get the most precise measurement of body fat percentage. Based on the Archimedes principle, hydrostatic testing is a more exact measurement because bone, muscle and connective tissue, known as lean mass, sinks while body fat floats, giving you a more accurate measurement than with traditional body fat testing methods.

Interested in getting a good dunk? Send an email to marinelet@marinecorpstimes.com with "dunk test" in the subject line. And watch the video I've posted up top, showing what a dunk test looks like when taken by a VERY fit young man. (You're welcome, ladies.)

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